397 lines
13 KiB
C
397 lines
13 KiB
C
/*
|
||
* vim:ts=4:sw=4:expandtab
|
||
*
|
||
* i3 - an improved dynamic tiling window manager
|
||
*
|
||
* © 2009-2011 Michael Stapelberg and contributors
|
||
*
|
||
* See file LICENSE for license information.
|
||
*
|
||
* i3-nagbar is a utility which displays a nag message.
|
||
*
|
||
*/
|
||
#include <ev.h>
|
||
#include <stdio.h>
|
||
#include <sys/types.h>
|
||
#include <sys/wait.h>
|
||
#include <stdlib.h>
|
||
#include <stdbool.h>
|
||
#include <unistd.h>
|
||
#include <string.h>
|
||
#include <errno.h>
|
||
#include <err.h>
|
||
#include <stdint.h>
|
||
#include <getopt.h>
|
||
#include <limits.h>
|
||
|
||
#include <xcb/xcb.h>
|
||
#include <xcb/xcb_aux.h>
|
||
#include <xcb/xcb_event.h>
|
||
|
||
#include "i3-nagbar.h"
|
||
|
||
typedef struct {
|
||
char *label;
|
||
char *action;
|
||
int16_t x;
|
||
uint16_t width;
|
||
} button_t;
|
||
|
||
static xcb_window_t win;
|
||
static xcb_pixmap_t pixmap;
|
||
static xcb_gcontext_t pixmap_gc;
|
||
static xcb_rectangle_t rect = { 0, 0, 600, 20 };
|
||
static char *glyphs_ucs[512];
|
||
static int input_position;
|
||
static int font_height;
|
||
static char *prompt = "Please do not run this program.";
|
||
static button_t *buttons;
|
||
static int buttoncnt;
|
||
xcb_window_t root;
|
||
|
||
/*
|
||
* Starts the given application by passing it through a shell. We use double fork
|
||
* to avoid zombie processes. As the started application’s parent exits (immediately),
|
||
* the application is reparented to init (process-id 1), which correctly handles
|
||
* childs, so we don’t have to do it :-).
|
||
*
|
||
* The shell is determined by looking for the SHELL environment variable. If it
|
||
* does not exist, /bin/sh is used.
|
||
*
|
||
*/
|
||
static void start_application(const char *command) {
|
||
printf("executing: %s\n", command);
|
||
if (fork() == 0) {
|
||
/* Child process */
|
||
setsid();
|
||
if (fork() == 0) {
|
||
/* Stores the path of the shell */
|
||
static const char *shell = NULL;
|
||
|
||
if (shell == NULL)
|
||
if ((shell = getenv("SHELL")) == NULL)
|
||
shell = "/bin/sh";
|
||
|
||
/* This is the child */
|
||
execl(shell, shell, "-c", command, (void*)NULL);
|
||
/* not reached */
|
||
}
|
||
exit(0);
|
||
}
|
||
wait(0);
|
||
}
|
||
|
||
static button_t *get_button_at(int16_t x, int16_t y) {
|
||
for (int c = 0; c < buttoncnt; c++)
|
||
if (x >= (buttons[c].x) && x <= (buttons[c].x + buttons[c].width))
|
||
return &buttons[c];
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static void handle_button_press(xcb_connection_t *conn, xcb_button_press_event_t *event) {
|
||
printf("button pressed on x = %d, y = %d\n",
|
||
event->event_x, event->event_y);
|
||
/* TODO: set a flag for the button, re-render */
|
||
}
|
||
|
||
/*
|
||
* Called when the user releases the mouse button. Checks whether the
|
||
* coordinates are over a button and executes the appropriate action.
|
||
*
|
||
*/
|
||
static void handle_button_release(xcb_connection_t *conn, xcb_button_release_event_t *event) {
|
||
printf("button released on x = %d, y = %d\n",
|
||
event->event_x, event->event_y);
|
||
/* If the user hits the close button, we exit(0) */
|
||
if (event->event_x >= (rect.width - 32))
|
||
exit(0);
|
||
button_t *button = get_button_at(event->event_x, event->event_y);
|
||
if (!button)
|
||
return;
|
||
start_application(button->action);
|
||
|
||
/* TODO: unset flag, re-render */
|
||
}
|
||
|
||
/*
|
||
* Handles expose events (redraws of the window) and rendering in general. Will
|
||
* be called from the code with event == NULL or from X with event != NULL.
|
||
*
|
||
*/
|
||
static int handle_expose(xcb_connection_t *conn, xcb_expose_event_t *event) {
|
||
printf("expose!\n");
|
||
|
||
/* re-draw the background */
|
||
xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#900000"));
|
||
xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &rect);
|
||
|
||
/* restore font color */
|
||
uint32_t values[3];
|
||
values[0] = get_colorpixel(conn, "#FFFFFF");
|
||
values[1] = get_colorpixel(conn, "#900000");
|
||
xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND, values);
|
||
xcb_image_text_8(conn, strlen(prompt), pixmap, pixmap_gc, 4 + 4/* X */,
|
||
font_height + 2 + 4 /* Y = baseline of font */, prompt);
|
||
|
||
/* render close button */
|
||
int line_width = 4;
|
||
int w = 20;
|
||
int y = rect.width;
|
||
values[0] = get_colorpixel(conn, "#680a0a");
|
||
values[1] = line_width;
|
||
xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
|
||
|
||
xcb_rectangle_t close = { y - w - (2 * line_width), 0, w + (2 * line_width), rect.height };
|
||
xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &close);
|
||
|
||
xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#d92424"));
|
||
xcb_point_t points[] = {
|
||
{ y - w - (2 * line_width), line_width / 2 },
|
||
{ y - (line_width / 2), line_width / 2 },
|
||
{ y - (line_width / 2), (rect.height - (line_width / 2)) - 2 },
|
||
{ y - w - (2 * line_width), (rect.height - (line_width / 2)) - 2 },
|
||
{ y - w - (2 * line_width), line_width / 2 }
|
||
};
|
||
xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, pixmap, pixmap_gc, 5, points);
|
||
|
||
values[0] = get_colorpixel(conn, "#ffffff");
|
||
values[1] = get_colorpixel(conn, "#680a0a");
|
||
values[2] = 1;
|
||
xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_LINE_WIDTH, values);
|
||
xcb_image_text_8(conn, strlen("x"), pixmap, pixmap_gc, y - w - line_width + (w / 2) - 4/* X */,
|
||
font_height + 2 + 4 - 1/* Y = baseline of font */, "X");
|
||
y -= w;
|
||
|
||
y -= 20;
|
||
|
||
/* render custom buttons */
|
||
line_width = 1;
|
||
for (int c = 0; c < buttoncnt; c++) {
|
||
/* TODO: make w = text extents of the label */
|
||
w = 90;
|
||
y -= 30;
|
||
xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#680a0a"));
|
||
close = (xcb_rectangle_t){ y - w - (2 * line_width), 2, w + (2 * line_width), rect.height - 6 };
|
||
xcb_poly_fill_rectangle(conn, pixmap, pixmap_gc, 1, &close);
|
||
|
||
xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FOREGROUND, get_colorpixel(conn, "#d92424"));
|
||
buttons[c].x = y - w - (2 * line_width);
|
||
buttons[c].width = w;
|
||
xcb_point_t points2[] = {
|
||
{ y - w - (2 * line_width), (line_width / 2) + 2 },
|
||
{ y - (line_width / 2), (line_width / 2) + 2 },
|
||
{ y - (line_width / 2), (rect.height - 4 - (line_width / 2)) },
|
||
{ y - w - (2 * line_width), (rect.height - 4 - (line_width / 2)) },
|
||
{ y - w - (2 * line_width), (line_width / 2) + 2 }
|
||
};
|
||
xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, pixmap, pixmap_gc, 5, points2);
|
||
|
||
values[0] = get_colorpixel(conn, "#ffffff");
|
||
values[1] = get_colorpixel(conn, "#680a0a");
|
||
xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND | XCB_GC_BACKGROUND, values);
|
||
xcb_image_text_8(conn, strlen(buttons[c].label), pixmap, pixmap_gc, y - w - line_width + 6/* X */,
|
||
font_height + 2 + 3/* Y = baseline of font */, buttons[c].label);
|
||
|
||
y -= w;
|
||
}
|
||
|
||
/* border line at the bottom */
|
||
line_width = 2;
|
||
values[0] = get_colorpixel(conn, "#470909");
|
||
values[1] = line_width;
|
||
xcb_change_gc(conn, pixmap_gc, XCB_GC_FOREGROUND | XCB_GC_LINE_WIDTH, values);
|
||
xcb_point_t bottom[] = {
|
||
{ 0, rect.height - 0 },
|
||
{ rect.width, rect.height - 0 }
|
||
};
|
||
xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, pixmap, pixmap_gc, 2, bottom);
|
||
|
||
|
||
/* Copy the contents of the pixmap to the real window */
|
||
xcb_copy_area(conn, pixmap, win, pixmap_gc, 0, 0, 0, 0, rect.width, rect.height);
|
||
xcb_flush(conn);
|
||
|
||
return 1;
|
||
}
|
||
|
||
int main(int argc, char *argv[]) {
|
||
char *pattern = "-misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1";
|
||
int o, option_index = 0;
|
||
|
||
static struct option long_options[] = {
|
||
{"version", no_argument, 0, 'v'},
|
||
{"font", required_argument, 0, 'f'},
|
||
{"button", required_argument, 0, 'b'},
|
||
{"help", no_argument, 0, 'h'},
|
||
{"message", no_argument, 0, 'm'},
|
||
{0, 0, 0, 0}
|
||
};
|
||
|
||
char *options_string = "b:f:m:vh";
|
||
|
||
while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) {
|
||
switch (o) {
|
||
case 'v':
|
||
printf("i3-nagbar " I3_VERSION);
|
||
return 0;
|
||
case 'f':
|
||
FREE(pattern);
|
||
pattern = strdup(optarg);
|
||
break;
|
||
case 'm':
|
||
prompt = strdup(optarg);
|
||
break;
|
||
case 'h':
|
||
printf("i3-nagbar " I3_VERSION "\n");
|
||
printf("i3-nagbar [-m <message>] [-b <button> <action>] [-f <font>] [-v]\n");
|
||
return 0;
|
||
case 'b':
|
||
buttons = realloc(buttons, sizeof(button_t) * (buttoncnt + 1));
|
||
buttons[buttoncnt].label = optarg;
|
||
buttons[buttoncnt].action = argv[optind];
|
||
printf("button with label *%s* and action *%s*\n",
|
||
buttons[buttoncnt].label,
|
||
buttons[buttoncnt].action);
|
||
buttoncnt++;
|
||
printf("now %d buttons\n", buttoncnt);
|
||
if (optind < argc)
|
||
optind++;
|
||
break;
|
||
}
|
||
}
|
||
|
||
int screens;
|
||
xcb_connection_t *conn = xcb_connect(NULL, &screens);
|
||
if (xcb_connection_has_error(conn))
|
||
die("Cannot open display\n");
|
||
|
||
/* Place requests for the atoms we need as soon as possible */
|
||
#define xmacro(atom) \
|
||
xcb_intern_atom_cookie_t atom ## _cookie = xcb_intern_atom(conn, 0, strlen(#atom), #atom);
|
||
#include "atoms.xmacro"
|
||
#undef xmacro
|
||
|
||
xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screens);
|
||
root = root_screen->root;
|
||
|
||
uint32_t font_id = get_font_id(conn, pattern, &font_height);
|
||
|
||
/* Open an input window */
|
||
win = open_input_window(conn, 500, font_height + 8 + 8 /* 8px padding */);
|
||
|
||
/* Setup NetWM atoms */
|
||
#define xmacro(name) \
|
||
do { \
|
||
xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, name ## _cookie, NULL); \
|
||
if (!reply) \
|
||
die("Could not get atom " # name "\n"); \
|
||
\
|
||
A_ ## name = reply->atom; \
|
||
free(reply); \
|
||
} while (0);
|
||
#include "atoms.xmacro"
|
||
#undef xmacro
|
||
|
||
/* Set dock mode */
|
||
xcb_void_cookie_t dock_cookie = xcb_change_property(conn,
|
||
XCB_PROP_MODE_REPLACE,
|
||
win,
|
||
A__NET_WM_WINDOW_TYPE,
|
||
A_ATOM,
|
||
32,
|
||
1,
|
||
(unsigned char*) &A__NET_WM_WINDOW_TYPE_DOCK);
|
||
|
||
/* Reserve some space at the top of the screen */
|
||
struct {
|
||
uint32_t left;
|
||
uint32_t right;
|
||
uint32_t top;
|
||
uint32_t bottom;
|
||
uint32_t left_start_y;
|
||
uint32_t left_end_y;
|
||
uint32_t right_start_y;
|
||
uint32_t right_end_y;
|
||
uint32_t top_start_x;
|
||
uint32_t top_end_x;
|
||
uint32_t bottom_start_x;
|
||
uint32_t bottom_end_x;
|
||
} __attribute__((__packed__)) strut_partial = {0,};
|
||
|
||
strut_partial.top = font_height + 6;
|
||
strut_partial.top_start_x = 0;
|
||
strut_partial.top_end_x = 800;
|
||
|
||
xcb_void_cookie_t strut_cookie = xcb_change_property(conn,
|
||
XCB_PROP_MODE_REPLACE,
|
||
win,
|
||
A__NET_WM_STRUT_PARTIAL,
|
||
A_CARDINAL,
|
||
32,
|
||
12,
|
||
&strut_partial);
|
||
|
||
/* Create pixmap */
|
||
pixmap = xcb_generate_id(conn);
|
||
pixmap_gc = xcb_generate_id(conn);
|
||
xcb_create_pixmap(conn, root_screen->root_depth, pixmap, win, 500, font_height + 8);
|
||
xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
|
||
|
||
/* Create graphics context */
|
||
xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FONT, font_id);
|
||
|
||
/* Grab the keyboard to get all input */
|
||
xcb_flush(conn);
|
||
|
||
xcb_generic_event_t *event;
|
||
while ((event = xcb_wait_for_event(conn)) != NULL) {
|
||
if (event->response_type == 0) {
|
||
fprintf(stderr, "X11 Error received! sequence %x\n", event->sequence);
|
||
continue;
|
||
}
|
||
|
||
/* Strip off the highest bit (set if the event is generated) */
|
||
int type = (event->response_type & 0x7F);
|
||
|
||
switch (type) {
|
||
case XCB_EXPOSE:
|
||
handle_expose(conn, (xcb_expose_event_t*)event);
|
||
break;
|
||
|
||
case XCB_BUTTON_PRESS:
|
||
handle_button_press(conn, (xcb_button_press_event_t*)event);
|
||
break;
|
||
|
||
case XCB_BUTTON_RELEASE:
|
||
handle_button_release(conn, (xcb_button_release_event_t*)event);
|
||
break;
|
||
|
||
case XCB_CONFIGURE_NOTIFY: {
|
||
xcb_configure_notify_event_t *configure_notify = (xcb_configure_notify_event_t*)event;
|
||
rect = (xcb_rectangle_t){
|
||
configure_notify->x,
|
||
configure_notify->y,
|
||
configure_notify->width,
|
||
configure_notify->height
|
||
};
|
||
|
||
/* Recreate the pixmap / gc */
|
||
xcb_free_pixmap(conn, pixmap);
|
||
xcb_free_gc(conn, pixmap_gc);
|
||
|
||
xcb_create_pixmap(conn, root_screen->root_depth, pixmap, win, rect.width, rect.height);
|
||
xcb_create_gc(conn, pixmap_gc, pixmap, 0, 0);
|
||
|
||
/* Create graphics context */
|
||
xcb_change_gc_single(conn, pixmap_gc, XCB_GC_FONT, font_id);
|
||
break;
|
||
}
|
||
}
|
||
|
||
free(event);
|
||
}
|
||
|
||
return 0;
|
||
}
|